Hotspot html files path [bug]

Hey all.

I think i have came across a very annoying bug with hotspot html file path.

I have got a USB stick(16gb) and moved my log files to that.
I have formated usb stick to ext3, so MT sees it as ‘disk1’:

[admin@MikroTik-router] > disk print 
# NAME LABEL TYPE DISK FREE SIZE
0 disk1 usb-flash ext3 Storage Device 14.2GiB 14.4GiB

When i navigate to Hotspot server profiles settings, while selecting html directory I can select ‘disk1/hotspot_office’ from dropdown menu. After the selection it does not change html hotspot layout(as it’s suppose to). And if i keep it for some time, it will automatically the path to “flash/disk1/hotspot_office”, which is obviously wrong.
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Have tried putting ‘disk1/hotspot_office’ and ‘/disk1/hotspot_office’ path everywhere i could - still no chance.
If i pit “hotspot_office” folder back to "flash: directory and specify “flash/hotspot_office” it works fine and loads correctly. But i dont want to keep it in flash memory.